Door stop and releasing device.



T. P. SERAN,

DOOR STOP AND RELEASING DEVICE.

APPLICATION FILED Nov. 29, 1909.

' Patented Man 8, 1910. W

Y o i@ IHM WMU www Nfl* um zum B muuu o: Mom-uncanwms wpsmNGToN D CUNITED STATES THOMAS P. SHEAN, OF CHICAGO, ILLINOIS, ASSIGNOR ATOKNISELY BROTHERS, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

DOOR STOP AND RELEASING DEVICE.

Application filed. November 29, 1999.

To all whom it may concern:

Beit known that I, THOMAS l?. SHEAN, citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Door Stop and ReleasingDevices, of which the following is a specification.

My invention relates to doors and particularly to double doors used inpartition walls and which are especially designed to' afford protectionin case of lire, the device being especially applicable to hinged doubledoors.

The main object of the improvements which constitute the subject matterof this application for patent is to provide an automatic safety devicewhich will insure that the closing of the coperating doors to which itis applied will take place in proper sequence. I/Vhen a double door isused to close an opening in a partition or ire wall it is a commonpractice to provide one of the doors with a flange or astragal whichoverlaps the margin of the companion door, thus forming a tight jointfor the purpose of preventing the passage of hot air or flames from oneside of the door to the other in case of fire, and if the door bearingthis projection is closed rst it will prevent the other from beingtightly closed, and the opening thus left will defeat the purpose forwhich the specially constructed doors are intended.

I accomplish the desired result by means of a pivotal stop arranged toautomatically fall into'the path of the door which bears the astragal,and thus requires it to be checked and shut last, and hold said doorsufficiently aj ar to permit the other door to swing shut, the lattercarrying an arm which engages a projection on the pivot of the stop, andswings the latter out of the way thus permitting the checked door to becom pletely closed in proper sequence.

The preferred form of my improved safety drawing, which forms a part ofthis application, the important details of the construction beingdisclosed in the following views Figure 1 is a front elevation of the uper portion of cooperating hinged doors to which my invention is applied,only so much of the doors and adjacent structures being shown as willsuce for a clear understand- Specication of Letters Patent.

Patented Mar. 8,1910.

seriai No. 530,288.

ing of the invention; Fig. 2 is a top plan view ofthe parts shown inFig. l, and Fig. 3 is a sectional view, taken on the line 3 3 of Fig. 2.

- Referring to the details of the drawing, the numeral 5 indicates theside members or posts and 6 the lintel of a door frame within which ishung a double door consisting of the right and left hand leaves or doors7 and 8, respectively, the upper hinges or butts being indicated at 9.The left-hand door 8 bears the usual molding or astragal 10 overlappingthe companion door when closed, and as the door 8 for that reason mustalways be closed last, as hereinbefore eX- plained, I place above thesaid door 8 a stop .or check consisting of an arm 1l, attached to orintegral with a rock-shaft 12, suppo-rted in brackets 13, secured to thelintel 6 in any convenient manner. The arm l1 is free to swing to theinclined position shown in Fig. 8, slightly below the horizontal, andwhen so positioned its extremity will lie in the path of thecorresponding door and engage the latter when it is swung to, as shownin Fig. 2 of the drawing, thus holding it slightly ajar and sufficientlyopen to permit the companion door to clear the astragallO. The door 7 isprovided with a vertical lug or linger 111, secured to the front orouter face of the door near the free margin and projecting above the topedge so that when the door 7 is nearly closed it will engage the crankarm portion 15 of the said shaft 12, and throw the stop arm 11 back toits vertical position.

The manner of operating my improved safety device for double doors willbe readily understood. FThe left hand door 8, may be opened and closedwithout affecting the position of the stop 11, so long as the door 7remains closed. The overlapping molding or astragal prevents the latterdoor from being opened first, but as soon as the opposite door is swungupon its hinges to a sulfin r cient extent, the door 7 is then openedand device is illustrated 1n the accompanying this releases the portionl5 of the arm 11 so that the latter falls by gravity into thepath of thedoor 8. While in this position, that is, so long as the right hand door7 remains open, any attempt to close the opposite door 8 will beresisted by the engagement of the arm 11. If the right hand door is nowswung shut, the vertical fixed arm 14 will by striking the crank-portion15, rock the said yio stop arm 1l to the vertical position where it stoparm on said shaft adapted to move into will be held so long` as the door8 remains g closed.

Having thus described my invention, what I claim as new, is

1. In an automatic door stop, the combina tion with a plurality ofcoperating doors, of a stop arm arranged adjacent one of said doors andadapted to move into the path oi' said door, and means on the other doorfor restoring said arm to its initial inoperative position when the lastmentioned door is closed.

2. In an automatic door stop, the combination with a pair of coperating`doors, of a stop arm pivoted on the door lintel above one of said doorsand adapted to be moved into the path of said door, and an arm fixed onthe other door and adapted to restore said stop arm to its inoperativeposition when the second door is closed.

3. In an automatic door stop, the combination with a pair of cooperatingdoors, of a rock shaft arranged adjacent said doors, a

the path of one of said doors by the action of gravity, an arm ixed onthe other door and adapted to rock said shaft to its initial positionwhen the second door is closed.

Li; In an automatic door stop, the combination with a pair of eoperatingdoors, of a gravit-y operated stop adapted to move into the path of oneof said doors, and means on the other door for restoringsaid stop to itsinoperative position.

.5. In an automatic door-stop7 the combination with a pair ofcooperating doorsTo' a stop for preventing the closure of one of thedoors while the other door is open, and means controlled hy the movementof the latter door for rendering the said stop inoperative.

In testimony whereol:l I alibi my signature in the presence of twowitnesses.

THOMAS I. SHEAN. llfitnesses M. A. MILORD, I-I. DE Los I-IIGMAN.

